BloodMagic/BM_src/WayofTime/alchemicalWizardry/common/AlchemicalWizardryEventHooks.java

package WayofTime.alchemicalWizardry.common;

import WayofTime.alchemicalWizardry.common.entity.projectile.EnergyBlastProjectile;
import cpw.mods.fml.common.ObfuscationReflectionHelper;
import cpw.mods.fml.relauncher.ReflectionHelper;
import net.minecraft.entity.Entity;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.entity.IProjectile;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.entity.player.PlayerCapabilities;
import net.minecraft.entity.projectile.EntityArrow;
import net.minecraft.util.AxisAlignedBB;
import net.minecraft.util.DamageSource;
import net.minecraftforge.event.ForgeSubscribe;
import net.minecraftforge.event.entity.living.LivingAttackEvent;
import net.minecraftforge.event.entity.living.LivingEvent.LivingJumpEvent;
import net.minecraftforge.event.entity.living.LivingEvent.LivingUpdateEvent;

import java.util.*;

public class AlchemicalWizardryEventHooks {
    public static Map<String,Boolean> playerFlightBuff = new HashMap();
    public static Map<String,Boolean> playerBoostStepHeight = new HashMap();
    public static List<String> playersWith1Step = new ArrayList();

    @ForgeSubscribe
    public void onLivingJumpEvent(LivingJumpEvent event)
    {
        if (event.entityLiving.isPotionActive(AlchemicalWizardry.customPotionBoost))
        {
            int i = event.entityLiving.getActivePotionEffect(AlchemicalWizardry.customPotionBoost).getAmplifier();
            event.entityLiving.motionY += (0.1f) * (2 + i);
        }
    }

    @ForgeSubscribe
    public void onEntityDamaged(LivingAttackEvent event)
    {
        EntityLivingBase entityAttacked = event.entityLiving;

        if (entityAttacked.isPotionActive(AlchemicalWizardry.customPotionReciprocation))
        {
            Entity entityAttacking = event.source.getSourceOfDamage();

            if (entityAttacking != null && entityAttacking instanceof EntityLivingBase)
            {
                int i = event.entityLiving.getActivePotionEffect(AlchemicalWizardry.customPotionReciprocation).getAmplifier();
                float damageRecieve = event.ammount / 2 * (i + 1);
                ((EntityLivingBase) entityAttacking).attackEntityFrom(DamageSource.generic, damageRecieve);
            }
        }
    }

//	@ForgeSubscribe
//	public void onFOVUpdate(FOVUpdateEvent event)
//	{
//		event.setResult(Result.DEFAULT);
//	}

    @ForgeSubscribe
    public void onEntityUpdate(LivingUpdateEvent event)
    {
        EntityLivingBase entityLiving = event.entityLiving;

        if (entityLiving instanceof EntityPlayer && entityLiving.worldObj.isRemote)
        {
            EntityPlayer entityPlayer = (EntityPlayer) entityLiving;
            boolean highStepListed = playersWith1Step.contains(entityPlayer.username);
            boolean hasHighStep = entityPlayer.isPotionActive(AlchemicalWizardry.customPotionBoost);

            if (hasHighStep && !highStepListed)
            {
                playersWith1Step.add(entityPlayer.username);
            }

            if (!hasHighStep && highStepListed)
            {
                playersWith1Step.remove(entityPlayer.username);
                entityPlayer.stepHeight = 0.5F;
            }
        }

        if (event.entityLiving.isPotionActive(AlchemicalWizardry.customPotionDrowning))
        {
            int i = event.entityLiving.getActivePotionEffect(AlchemicalWizardry.customPotionDrowning).getAmplifier();

            if (event.entityLiving.worldObj.getWorldTime() % ((int) (20 / (i + 1))) == 0)
            {
                event.entityLiving.attackEntityFrom(DamageSource.drown, 2);
                event.entityLiving.hurtResistantTime = Math.min(event.entityLiving.hurtResistantTime, 20 / (i + 1));
            }
        }

        if (event.entityLiving.isPotionActive(AlchemicalWizardry.customPotionBoost))
        {
            int i = event.entityLiving.getActivePotionEffect(AlchemicalWizardry.customPotionBoost).getAmplifier();
            EntityLivingBase entity = event.entityLiving;
            //if(!entity.isSneaking())
            {
                double percentIncrease = (i + 1) * 0.03d;

                if (event.entityLiving instanceof EntityPlayer)
                {
                    EntityPlayer entityPlayer = (EntityPlayer) event.entityLiving;
                    entityPlayer.stepHeight = 1.0f;

                    if (!entityPlayer.worldObj.isRemote)
                    {
                        float speed = ((Float) ReflectionHelper.getPrivateValue(PlayerCapabilities.class, entityPlayer.capabilities, new String[]{"walkSpeed", "g", "field_75097_g"})).floatValue();
                        ObfuscationReflectionHelper.setPrivateValue(PlayerCapabilities.class, entityPlayer.capabilities, Float.valueOf(speed + (float) percentIncrease), new String[]{"walkSpeed", "g", "field_75097_g"}); //CAUTION
                    }
                }
            }
        }

        if (event.entityLiving.isPotionActive(AlchemicalWizardry.customPotionProjProt))
        {
            int i = event.entityLiving.getActivePotionEffect(AlchemicalWizardry.customPotionProjProt).getAmplifier();
            EntityLivingBase entity = event.entityLiving;
            int posX = (int) Math.round(entity.posX - 0.5f);
            int posY = (int) Math.round(entity.posY);
            int posZ = (int) Math.round(entity.posZ - 0.5f);
            int d0 = i;
            AxisAlignedBB axisalignedbb = AxisAlignedBB.getAABBPool().getAABB(posX - 0.5, posY - 0.5, posZ - 0.5, posX + 0.5, posY + 0.5, posZ + 0.5).expand(d0, d0, d0);
            List list = event.entityLiving.worldObj.getEntitiesWithinAABB(Entity.class, axisalignedbb);
            Iterator iterator = list.iterator();
            EntityLivingBase livingEntity;

            while (iterator.hasNext())
            {
                Entity projectile = (Entity) iterator.next();

                if (projectile == null)
                {
                    continue;
                }

                if (!(projectile instanceof IProjectile))
                {
                    continue;
                }

                if (projectile instanceof EntityArrow)
                {
                    if (((EntityArrow) projectile).shootingEntity == null)
                    {
                    } else if (!(((EntityArrow) projectile).shootingEntity == null) && ((EntityArrow) projectile).shootingEntity.equals(entity))
                    {
                        break;
                    }
                } else if (projectile instanceof EnergyBlastProjectile)
                {
                    if (!(((EnergyBlastProjectile) projectile).shootingEntity == null) && ((EnergyBlastProjectile) projectile).shootingEntity.equals(entity))
                    {
                        break;
                    }
                }

                double delX = projectile.posX - entity.posX;
                double delY = projectile.posY - entity.posY;
                double delZ = projectile.posZ - entity.posZ;
                double curVel = Math.sqrt(delX * delX + delY * delY + delZ * delZ);
                //NOTE: It appears that it constantly reverses the direction.
                //Any way to do it only once? Or find the shooting entity?
                delX /= curVel;
                delY /= curVel;
                delZ /= curVel;
                double newVel = Math.sqrt(projectile.motionX * projectile.motionX + projectile.motionY * projectile.motionY + projectile.motionZ * projectile.motionZ);
                projectile.motionX = newVel * delX;
                projectile.motionY = newVel * delY;
                projectile.motionZ = newVel * delZ;
                //TODO make this not affect player's projectiles
            }
        }

        if (event.entityLiving.isPotionActive(AlchemicalWizardry.customPotionFlight))
        {
            if (event.entityLiving instanceof EntityPlayer)
            {
                EntityPlayer entityPlayer = (EntityPlayer) event.entityLiving;
                String ownerName = entityPlayer.username;
                playerFlightBuff.put(ownerName, true);
                entityPlayer.capabilities.allowFlying = true;
                //entityPlayer.sendPlayerAbilities();
            }
        } else
        {
            if (event.entityLiving instanceof EntityPlayer)
            {
                EntityPlayer entityPlayer = (EntityPlayer) event.entityLiving;
                String ownerName = entityPlayer.username;

                if (!playerFlightBuff.containsKey(ownerName))
                {
                    playerFlightBuff.put(ownerName, false);
                }

                if (playerFlightBuff.get(ownerName))
                {
                    playerFlightBuff.put(ownerName, false);

                    if (!entityPlayer.capabilities.isCreativeMode)
                    {
                        entityPlayer.capabilities.allowFlying = false;
                        entityPlayer.capabilities.isFlying = false;
                        entityPlayer.sendPlayerAbilities();
                    }
                }
            }
        }
    }
}